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Thread: Valve not firing

  1. #1
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    Valve not firing

    Okay guys, I'm at the field shooting my Luke's Custom Deflator with an X valve and a tank at 1100psi.

    I can hear the low pressure valve cycling, but the valve itself isn't firing. The line from the lpr to the valve is aired up, so it should be getting air.

    Any ideas? Maybe the sear?

    I'm new to mags, so it might be a noob mistake.

    Thanks!

  2. #2
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    You're running 1100 psi to you X valve?

  3. #3
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    I dont recall, who built this marker me or you?

  4. #4
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    Okay I'm an idiot, I had to turn in the silver cap on the back of the valve. See, noob mistake.

    Now I could use some help adjusting the lpr. Right now the trigger only shoots single shots, although I can hear the lpr still cycling when I hold the trigger down.

  5. #5
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    Yes. Ninja SHP

  6. #6
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    Please answer my two questions above.

  7. #7
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    Quote Originally Posted by luke View Post
    I dont recall, who built this marker me or you?
    You did, but you had some trouble with the fittings so you couldn't test my actual valve.

  8. #8
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    You dont need 1100 psi going to the xvalve, it's borderline unsafe, tune it down to about 900 psi

  9. #9
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    This is that the CCM fitting build that the orings wouldn't seal in the reanodized fittings, correct?

  10. #10
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    The LPR was already tuned, did you mess with that? (Just trying to figure out where you're at)

  11. #11
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    Your instinct is going to mess with the LPR, dont, focus on the X valve. Your input pressure (velocity adjuster) is likely to low.

  12. #12
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    Quote Originally Posted by luke View Post
    You dont need 1100 psi going to the xvalve, it's borderline unsafe, tune it down to about 900 psi
    Will do. Gotta vent 3000 psi now lol.

  13. #13
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    Quote Originally Posted by luke View Post
    This is that the CCM fitting build that the orings wouldn't seal in the reanodized fittings, correct?
    Correct, but I swapped out the anodized fittings for some black ones that work now.

    Sorry about the multiple replies, I'm on mobile.

  14. #14
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    Quote Originally Posted by luke View Post
    The LPR was already tuned, did you mess with that? (Just trying to figure out where you're at)
    Nope, I figured you set it up right and that I shouldn't mess with it.

  15. #15
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    If you can hear the T-Rex venting and trying to fire, your LPR is close enough at this point. If you increase the pressure adjuster too much you may damage the LPR.

  16. #16
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    When you put air to the marker can you hear the on/off (sear) set? If not increase the pressure at the x valve (rear velocity adjuster) until you do...

  17. #17
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    Quote Originally Posted by luke View Post
    When you put air to the marker can you hear the on/off (sear) set? If not increase the pressure at the x valve (rear velocity adjuster) until you do...
    The only sound I hear is a soft "full auto" sound inside the grip frame.

    So I lowered my tank to 950.

    I got it shooting a bit, but it was at 380fps. I backed out the velocity adjuster and now it's not shooting at all.

    Still hear that same sound near the trigger, but nothing else. If I can figure it out, I'll post a video.

  18. #18
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    Turn it back up and chrono the marker around 290 or so...

    The venting at the T-Rex is normal, it's designed to do so.

  19. #19
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    I've only got about 20 minutes or so and I gotta leave...

  20. #20
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    If all else fails send it back to me and I'll have a look.

  21. #21
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    Well Murphy hates me. My asa o ring blew and the fitting under the lpr started to leak. So I'm done with it for the day.

    I have 950psi air now though, so I can work on it at home.

    I'll Redo the fittings and asa and check it over again.

    If I'm still having issues I'm fine with sending it back to you. I'm far enough into this project I will do anything to get it to work and have that "legendary" Mag reliability haha

    Thanks a bunch for your help, it reassures me I've made a good investment in mags.

    And I want mags to work out for me because I'm excited for the new Nummech parts!

  22. #22
    There is no need to run a SHP with a pneumag. The point of the SHP is to increase the reactivity which is eliminated with the pneumag mod.

  23. #23
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    Quote Originally Posted by Patron God of Pirates View Post
    There is no need to run a SHP with a pneumag. The point of the SHP is to increase the reactivity which is eliminated with the pneumag mod.
    I lowered it to 950 as Luke said. I have a regular tank setup for autocockers that I could try. I think it's at 650.

    All my others are low pressure for electros.

  24. #24
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    Quote Originally Posted by cortexparasite View Post
    I lowered it to 950 as Luke said. I have a regular tank setup for autocockers that I could try. I think it's at 650.

    All my others are low pressure for electros.
    650 is too low, I like 925 psi

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